单项选择题

根据国家外汇管理局公布的《2010年中国国际收支报告》，2010年我国货物贸易顺差2542亿美元，服务贸易逆差221亿美元，收入项目顺差304亿美元，经常转移项目顺差429亿美元，资本项目顺差46亿美元，直接投资顺差1249亿美元，证券投资顺差240亿美元，其他投资顺差724亿美元，净错误与遗漏－597亿美元。根据上述资料，回答下列问题。

A.顺差2259
B.顺差2213
C.逆差221
D.逆差597
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多项选择题
2008年上半年，中国人民银行先后5次上调金融机构人民币存款准备金率，由14.5%调整到了17.5%。下半年以后，随着国际金融动荡加剧，为保证银行体系流动性充分供应，中国人民银行分别于9月25日、10月15日、12月5日和12月25日4次下调金融机构人民币存款准备金率，累计下调2个百分点，截至2008年年末，动态测算共释放流动性约8000亿元。2008年年末，广义货币供应量M2余额为47.5万亿元，狭义货币供应量M1余额为16.6万亿元，流通中现金M0余额为3.4万亿元，全年现金净投放3844亿元。
A.对金融机构的再贷款
B.收购外汇等储备资产
C.购买政府债券
D.对工商企业贷款
单项选择题
A database exists as a read-intensive server that is operating with query_cachek_type =DEMAND.The database is refreshed periodically, but the resultset size of the queries does not fluctuatE.Note the following details about this environment: A web application uses a limited set of queries. The Query Cache hit rate is high.All resultsets fit into the Query CachE.All queries are configured to use the Query Cache successfully. The response times for queries have recently started to increasE.The cause for this has correctly been identified as the increase in the number of concurrent users accessing the web servicE.Based solely on the information provided, what is the most likely cause for this slowdown at the database level?（）A.The Query Cache is pruning queries due to an increased number of requestsB.Query_cache_min_res_unit has been exceeded, leading to an increased performance overhead due to additional memory block lookupsC.Mutex contention on the Query Cache is forcing the queries to take longer due to its singlethreaded natureD.The average resultset of a query is increasing due to an increase in the number of users requiring SQL statement execution
A.The
B.Note
C.All
D.The
E.Based
F.The
G.Query_cache_min_res_unit
H.Mutex
I.The
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